Answer:
Radium (Ra)
Metal
Alkaline Earth Metal
Protons & Electrons: 88
Neutrons: 138
Explanation:
Answer:
magnesium, Mg, metal, alkaline earth metals, its neutral atom has 12 protons and 12 neutrons and 12 electrons
FIRST ONE TO RESPOND CORRECTLY GET BRAINLESS
Answer:
sorry but we can't answer without the pic
Explanation:
name the process of separating into immiseible liquid?
Answer:
Decantation
Explanation:
Decantation is a process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture such as a suspension.
Which types of bonds are responsible for a material's high thermal conductivity ?
A. Ionic bonding
B. Covalent bonding
C. Metallic bonding
D. Gaseous bonding
Answer:
b
Explanation:
Sodium-22 has a half-life of 10 hours. how much sodium-22 will remain in a 80.0 g sample after 50 hours?
# of half lives
grams remaining
Answer:
you would need to times the equation
Explanation:
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Answer C because the earths tilt causes the seasons
What is the total number of sulfur atoms in Mg2(SO4)3
AnswerElement Symbol # of Atoms
Magnesium Mg 1
Oxygen O 4
Sulfur S 1
:
Explanation:
Complete the following reaction.
Answer:
14C6(1st one)
Explanation:
by balancing the reaction on the right and left,the right side miss 6 from number of proton and 14 from mass number....
A cube of zinc at 15.C is placed in contact with a cube of tin at 45. Which statement describes the initial flow of heat between the cubes? *
Bacteria that can make food using chemicals are called
chemosynthetic bacteria.
True or false?
In an ecosystem animals compete for all factors, except?
A.) Water
B.) Toilet Paper
C.) Food
D.) Sunlight
balance this equation
Balanced equation
2Pb(NO₃)₂⇒2PbO+4NO₂+O₂
Further explanationGiven
Reaction
Pb(NO₃)₂⇒PbO+NO₂+O₂
Required
Balanced equation
Solution
Give coefficientPb(NO₃)₂⇒aPbO+bNO₂+cO₂
Make equationPb, left=1, right=a⇒a=1
N, left=2, right=b⇒b=2
O, left=6, right=a+2b+2c⇒6=1+2.2+2c⇒6=5+2c⇒1=2c⇒c=1/2
The reaction becomes :
Pb(NO₃)₂⇒PbO+2NO₂+1/2O₂ x2
2Pb(NO₃)₂⇒2PbO+4NO₂+O₂
What is the molar mass of a substance?
ОООО
the mass in grams of one mole of a substance
the number of particles in one gram of a substance
the number of moles in one gram of a substance
the mass in grams of one particle of a substance
oops pls forgive me I accidentally did the wrong question.
Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!
Answer:
C
Explanation:
Hope this helps Mrs. or Sir
Where does the second stage of cellular respiration
occur?
W
Х
Y
Z
Please hurry this is a test
Answer:
X is your answer Have a good day
Explanation:
The pyruvate molecules from glycolysis next enter the matrix of a mitochondrion. That's where the second stage of cellular respiration takes place. This stage is called the Krebs cycle. During this stage, two more molecules of ATP are produced
Answer:
z
Explanation:
Which phrase best describes the composition of Earth’s surface?
mostly water and some solid rock
mostly solid rock and some water
mostly liquid rock and some water
mostly water and some liquid rock
Answer:
??
Explanation:
3 biotic and 3 abiotic thing that are in the ocean and list 10 differnt anamals that live in the ocean
Answer:
abiotic - water, rocks, and oxygen
biotic - fish, turtles, and starfish
animals - shellfish, dolphins, sharks, whales, octopus, seal, squid, crab, seahorses, and sea lions.
Explanation:
have a great day!!
Which of the following is true about electrostatic forces? Check all that are true:
Like Gravity, electrostatic forces always attract
An atom with an equal number of protons and electrons can pull with an electrostatic force
An ion with a negative charge will repel another ion with a negative charge
Electrostatic forces are a fundamental force in the universe
Answer:
Option 3 or C An ion is all in Electrostatic forces so it's c if its not I'll work it out for you
An ion with a negative charge will repel another ion with a negative charge is the correct statement.
What is electrostatic forces?The electrostatic force is the force that exists between electrically charged particles or objects at rest means that objects having similar charge repel each other whereas objects having different charges attract each other.
An ion with a negative charge will repel another ion with a negative charge is the statement true about electrostatic forces because electrostatic force always occur between static object having charges on it.
Learn more about force here: https://brainly.com/question/12970081
Please help me out I need to know what the two atoms have in common.
Answer:
I think it's atomic number?
Explanation:
Really sorry if that's wrong
How many moles contain 9.15 x 1022 atoms of Ag?
Select the correct response.
0.152 mol
9.15 mol
0.325 mol
5.51 mol
Answer:
0.152 molExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{9.15 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.151993...[/tex]
We have the final answer as
0.152 molesHope this helps you
Mole Conversion: How many molecules are in 0.348 moles of Dihydrogen oxide?
Consider the compound Al(OH)3. What type of
solid does it form?
crystal lattice
glass
metal
molecule
Answer:
crystal lattice
Explanation:
The Aluminium Hydroxide forms a crystal lattice solid structure, the correct option is A.
What is a Crystal Lattice?The symmetrical, three-dimensional structural configuration of points representing atoms, ions, or molecules that make up a crystalline material is known as the crystal lattice.
It can be described as the geometrical arrangement of the crystalline solid's atoms, ions, or molecules as points in space.
Al(OH)3 is called Aluminium hydroxide, It is found in nature as the mineral gibbsite.
It is an amorphous white powder and is insoluble in water but soluble in acidic and alkaline solutions.
It can be used to relieve indigestion and stomach discomfort.
Al(OH)₃ is composed of two layers of hydroxyl groups, with aluminum ions filling two-thirds of the octahedral holes in the center of the structure.
There are four identified polymorphs. Each has layers of octahedral aluminum hydroxide units connected by hydrogen bonds.
So, the solid form of the compound Al(OH)₃ has a crystal lattice structure.
To know more about Crystal Lattice
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Is there currently a cure for HIV
Answer:
No
Explanation:
There are vaccines, to prevent it, made by Dr. Fauci, but no cure
how does newton’s third law effect bowling?
Answer:
The bowling ball will remain in motion until an unbalanced force acts on the bowling ball. ... When the ball hits the pins, they push on the ball with the same amount of force in the opposite direction. This means that the ball will slow down, and the pins will fall, which is the reaction.
Explanation:
Answer: His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.
Explanation: this means that when you throw the ball the wind pushes against the ball and so does the bolling pints.
What Is the smallest functional and structural unit of all living organisms
Answer:
A Cell
Explanation:
Answer:
Cell
Explanation:
The cell is the smallest structural and functional unit in living organisms that can live on its own. It is also considered the building block of creation.
Will mark brainliest
Changing which factor would NOT have an influence on the kinetic energy of a moving van loaded with 100 kg bags mulch of with a total mass of 1,500 kg. The vehicle is traveling across an open parking lot at a speed of 5 m/s.
Question 5 options:
direction the moving van is going across the parking lot.
increasing the rate of speed without altering the mass of the vehicle or its contents.
adding more contents (increasing the overall mass) to the van while the van is in motion traveling 5 m/s.
emptying the moving van one bag at a time at a constant rate.
Answer: the first option
Explanation:
Direction has nothing to do with the speed/ kinetic energy
Answer: A
Explanation:
What is the chemical name of the fruit orange
Answer:
The chemical name is C16H11N2NaO4S
Explanation:
When vinegar is added to baking soda, Carbon dioxide is formed. Name the reactant(s) and product(s)
(Earn 15 points)
Answer: The "equation" here is vinegar + baking soda = carbon dioxide. The reactants are vinegar and baking soda. The products are carbon dioxide.
Explanation: The reactants are the "ingredients," or the two or more substances you mix in order to form the product, the ending result. In this situation, you mixed vinegar and baking soda, so those are the reactants. You ended up making CO2, the product.
A compound contains 29.27% carbon, 51.22% nitrogen, and 19.50% oxygen. What is the molecular formula if the molar mass is 570.5 grams?
Answer:
its either A or B most likley A if im wrong then im sorry.
Explanation:
have a wonderfull day
NEED THIS SO BAD NEED TO GET OFF SOON BC ITS MY BRO BIRTHDAY AND ALSO PLEASEEEE FOR A BIG GRADE PLEASE ❤️
Answer:
A
Explanation:
What element do you think would easily react with Calcium? Why?
Answer:
On heating, calcium reacts with hydrogen, halogens, boron, sulfur, carbon, and phosphorus.
Explanation:
Electron configuration: 1s22s22p63s23p64s2
Atomic number: 20
Atomic weight: 40.078
Oxidation state: +2
